The 10202A-90-APC from Thorlabs Inc is a Fiber Optic Coupler with Wavelength 1310 - 1550 nm, Directivity 60 dB, Insertion Loss 0.8 - 12.7 dB, Polarization Dependent Loss 0.15 dB, Operating Temperature -40 to 85 Degree C. More details for 10202A-90-APC can be seen below.